Bump simple_form and sass-rails

Get off of rc and beta releases

Change-Id: I7a99d840bfeb8e206cae4dd2e3611ad944217fd2
s/.css.scss/.scss/g

Change-Id: Idcd90102320f29771d74b2e6d145f01cb4637a1b
Replace cancan fork with cancancan

Change-Id: Iff77d011c98fa2379f0def7ee7974589665356e9
Remove fuubar

Fuubar is awful, and it is locking us to old rspec versions.

Change-Id: I259484a09c03e26b76a63104c9240f19a0173774
Eager load answers and questions

Change-Id: I1c6f7ebb07711bc8ff9ba52b3686bd46a4fe37ad
Improve question_for performance

Change-Id: I2391ecb0abcbfeace6fcd906d1002317a4e60bd4